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Vishay General Semiconductor - Diodes Division P4SMA68CAHE3/61
- Part No.:
- P4SMA68CAHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA68CAHE3/61.pdf
- Description:
- TVS DIODE 58.1VWM 92VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P4SMA68CAHE3/61 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on signal and power lines. It features a 58.1 V standoff voltage (VWM), 64.6–71.4 V breakdown voltage (VBR) at 1 mA, 92.0 V maximum clamping voltage (VC) at 4.3 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - used in automotive sensor protection and industrial I/O interface surge suppression.
For engineers reviewing the P4SMA68CAHE3/61 datasheet, P4SMA68CAHE3/61 pinout, P4SMA68CAHE3/61 application, or P4SMA68CAHE3/61 equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low incremental surge resistance, thermal resistance (RθJA = 120 °C/W), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped transient protector with symmetrical avalanche behavior in both directions due to its bidirectional construction. It exhibits fast response time (<1 ns), low clamping ratio (VC/VBR ≈ 1.36 at rated conditions), and meets J-STD-020 MSL Level 1 reflow requirements (peak 260 °C).
Designed for repetitive surge events at 0.01% duty cycle, it delivers 400 W peak pulse power up to 91 V and derates to 300 W above that threshold. Its glass-passivated junction ensures stable leakage performance (≤1.0 µA at VWM) and long-term reliability under thermal cycling between –65 °C and +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 58.1 V - Maximum continuous reverse working voltage before conduction begins; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 64.6–71.4 V at 1 mA - Voltage at which device enters avalanche; tight tolerance enables precise overvoltage threshold setting. |
| VC (Clamping Voltage) | 92.0 V at 4.3 A (10/1000 µs) - Peak voltage seen by protected circuit during surge; determines stress on downstream components. |
| PPPM (Peak Pulse Power) | 400 W - Surge energy handling capacity under standard 10/1000 µs waveform; supports robust protection in automotive and industrial environments. |
| IPPM (Peak Pulse Current) | 4.3 A - Maximum non-repetitive surge current the device can safely shunt without degradation. |
| TJmax | +150 °C - Maximum junction temperature; allows operation in high-ambient environments like engine control units. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, bidirectional configuration with no polarity marking. Case dimensions: 4.93 mm × 3.99 mm × 2.29 mm (L × W × H); matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; common node in bidirectional operation | Connected to line being protected; forms symmetrical clamping path with cathode during either polarity surge. |
| Cathode | Current exit terminal in forward bias; common node in bidirectional operation | Connected to line being protected; enables identical clamping behavior for positive and negative transients. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns. |
| 400 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-to-ground) when properly laid out. |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive applications including body electronics, ADAS sensors, and infotainment interfaces. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow profile use without baking prior to assembly. |
| Glass passivated junction | Ensures stable leakage current (<1 µA at VWM) and long-term parameter stability under thermal/humidity stress. |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Analog Input Protection |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ESD events in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential signal pair or supply rail to clamp transients before they reach sensitive front-end amplifiers or communication ICs. Use Value: Maintains signal integrity during 400 W surges while adding <1 pF parasitic capacitance - critical for preserving bandwidth in 1 Mbps CAN FD links. |
Use Scenario: Safeguarding 4–20 mA current loop inputs and ±10 V analog inputs in programmable logic controllers against field-induced surges and wiring faults. IC Role / Device Role / Timing Role: Low-leakage (≤1 µA) clamping device mounted directly at connector entry point to divert surge energy away from precision ADCs and op-amps. Use Value: Enables compliance with IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge) without degrading measurement accuracy or introducing offset drift. |
| Telecom Line Card Surge Suppression | Consumer Appliance Motor Drive Protection |
|
Use Scenario: Shielding Ethernet PHYs, DSL line drivers, and PoE injectors from lightning-induced surges on twisted-pair cabling. IC Role / Device Role / Timing Role: Fast-response (sub-nanosecond) TVS placed at RJ-45 jack to limit induced transients to <92 V before reaching magnetics and transceiver ICs. Use Value: Prevents latch-up and permanent damage in 10/100/1000BASE-T PHYs while maintaining signal rise/fall times due to minimal junction capacitance. |
Use Scenario: Suppressing commutation spikes from brushed DC motors and relay coils in washing machines, HVAC blowers, and power tools. IC Role / Device Role / Timing Role: Mounted across motor terminals or relay coil to absorb inductive kickback energy and prevent MOSFET gate oxide failure. Use Value: Withstands 40 A IFSM (unidirectional variant reference) and provides repeatable clamping over 100,000 surge cycles - extending system MTBF. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64CA | Higher VWM (55.1 V), lower VC (103 V at 3.9 A), SMB package (larger footprint) | Preferred where higher surge current margin is needed but board space permits larger package | Select when layout allows SMB footprint and tighter clamping ratio (VC/VBR) is prioritized over size. |
| 1.5KE68CA | Through-hole DO-201 package, same VWM/VBR range, 1500 W PPPM, higher thermal mass | Suitable for prototyping, high-energy surge zones, or legacy through-hole designs | Choose for manual assembly, high-reliability test fixtures, or where PCB real estate is less constrained than in modern SMT modules. |
Compared with P4SMA68CAHE3/61, SMBJ64CA offers better clamping efficiency in a larger package, while 1.5KE68CA trades miniaturization for higher energy absorption and through-hole robustness - making P4SMA68CAHE3/61 optimal for space-constrained AEC-Q101-compliant SMT deployments.
Availability
P4SMA68CAHE3/61 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC analog inputs, telecom line cards, and consumer appliance motor drives requiring stable component supply, AEC-Q101 traceability, and RoHS-compliant manufacturing.
Supply support for P4SMA68CAHE3/61 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive qualification.
The P4SMA Series targets cost-sensitive, high-volume transient suppression needs in automotive, industrial, and communications systems - delivering standardized TVS performance in compact SMA packages with AEC-Q101 and RoHS options.
FAQ
What does the "CA" suffix indicate in P4SMA68CAHE3/61?
The "CA" suffix in P4SMA68CAHE3/61 denotes a bidirectional Transient Voltage Suppressor. Unlike unidirectional variants (e.g., P4SMA68A), this device provides symmetrical clamping for both positive and negative voltage transients without polarity dependency - essential for protecting AC-coupled or floating signal paths. The P4SMA68CAHE3/61 achieves this via internal back-to-back diode configuration.
Is P4SMA68CAHE3/61 qualified for automotive applications?
Yes, P4SMA68CAHE3/61 is AEC-Q101 qualified, as confirmed by the "HE3" suffix and Vishay documentation. This qualification covers stress tests including temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge (ESD), validating its suitability for automotive body electronics, sensor modules, and infotainment systems. The P4SMA68CAHE3/61 meets all required lifetime and reliability benchmarks for under-hood and cabin-mounted electronics.
What is the maximum clamping voltage of P4SMA68CAHE3/61 under surge conditions?
The maximum clamping voltage (VC) of P4SMA68CAHE3/61 is 92.0 V at 4.3 A peak pulse current with a 10/1000 µs waveform. This value represents the highest voltage imposed on the protected circuit during a standardized surge event and is measured across the device terminals under specified test conditions. For system-level design, this VC must remain below the absolute maximum ratings of downstream ICs protected by the P4SMA68CAHE3/61.
How does the HE3 suffix differ from E3 or M3 in P4SMA68CAHE3/61?
The "HE3" suffix in P4SMA68CAHE3/61 indicates RoHS-compliant construction combined with AEC-Q101 qualification, distinguishing it from "E3" (RoHS-compliant commercial grade) and "M3" (halogen-free RoHS-compliant commercial grade). Only HE3 and HM3 variants undergo full automotive reliability testing. The P4SMA68CAHE3/61 therefore carries full traceability, extended temperature validation, and failure mode documentation required for Tier 1 automotive supply chains.
What is the thermal resistance of P4SMA68CAHE3/61, and how does it affect layout?
P4SMA68CAHE3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on minimum recommended pad layout (0.2" × 0.2" copper pads per terminal). This value implies that sustained power dissipation above ~275 mW will raise junction temperature beyond safe limits at 25 °C ambient. To ensure reliability, PCB layout must provide adequate copper area and avoid thermal bottlenecks - especially important in automotive applications where ambient temperatures exceed 85 °C. The P4SMA68CAHE3/61's RθJA directly informs heatsinking requirements and derating curves in system thermal models.
P4SMA68CAHE3/61 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- P4SMA, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 58.1V
- Voltage - Breakdown (Min):
- 64.6V
- Voltage - Clamping (Max) @ Ipp:
- 92V
- Current - Peak Pulse (10/1000µs):
- 4.3A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA68CAHE3/61 FAQ
1.How can I place an order for P4SMA68CAHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA68CAHE3/61 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for P4SMA68CAHE3/61 reliable?
The price and inventory of P4SMA68CAHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA68CAHE3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA68CAHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA68CAHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA68CAHE3/61?
P4SMA68CAHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA68CAHE3/61 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for P4SMA68CAHE3/61?
For technical support, including P4SMA68CAHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA68CAHE3/61 requirements.
6.How does Aetrix verify that P4SMA68CAHE3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA68CAHE3/61 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that P4SMA68CAHE3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA68CAHE3/61?
All P4SMA68CAHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA68CAHE3/61, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The P4SMA68CAHE3/61 part is unused and in its original packaging.
Return procedure for P4SMA68CAHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA68CAHE3/61 Tags
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